CN113792408B - Method and system for determining punching bearing capacity of wind turbine foundation - Google Patents
Method and system for determining punching bearing capacity of wind turbine foundation Download PDFInfo
- Publication number
- CN113792408B CN113792408B CN202110874229.8A CN202110874229A CN113792408B CN 113792408 B CN113792408 B CN 113792408B CN 202110874229 A CN202110874229 A CN 202110874229A CN 113792408 B CN113792408 B CN 113792408B
- Authority
- CN
- China
- Prior art keywords
- foundation
- bearing capacity
- wind turbine
- circular
- slab
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000004080 punching Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000013461 design Methods 0.000 claims abstract description 25
- 239000004567 concrete Substances 0.000 claims abstract description 12
- 238000012795 verification Methods 0.000 claims description 3
- 238000009412 basement excavation Methods 0.000 abstract description 3
- 238000012938 design process Methods 0.000 abstract description 3
- 238000004364 calculation method Methods 0.000 description 8
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/32—Foundations for special purposes
- E02D27/44—Foundations for machines, engines or ordnance
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/14—Force analysis or force optimisation, e.g. static or dynamic forces
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Geometry (AREA)
- Evolutionary Computation (AREA)
- Computer Hardware Design (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Wind Motors (AREA)
Abstract
The invention discloses a method and a system for determining punching bearing capacity of a wind turbine foundation, wherein the method comprises the following steps: acquiring size data of a wind turbine foundation; obtaining foundation net counter force according to the size data and the maximum down force design value of the round foundation slab in the wind turbine foundation; and obtaining the punching bearing capacity according to the size data and the design value of the tensile strength of the basic concrete. The method is suitable for calculating the punching bearing capacity of the foundation of the excavation backfill foundation circular fan, and solves the problem that the limitation of calculating the punching bearing capacity of the foundation slab of the square foundation only in the foundation design process of the conventional fan unit is solved.
Description
Technical Field
The invention relates to the technical field of foundation bases of wind turbines, in particular to a method and a system for determining punching bearing capacity of a foundation of a wind turbine.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
Typical foundation types of fans applied to wind power engineering include: in the foundation design theory, the design specification of the existing wind turbine generator system foundation only provides a punching calculation method of a square foundation slab, and does not provide bearing capacity calculation when the circular foundation slab is punched under the action of eccentric load; secondly, because the wind turbine generator foundation bears the specificity of repeated load in 360 degrees and large eccentric stress, circular foundation slabs are increasingly adopted in actual engineering, and the calculation of the punching bearing capacity of the circular foundation slabs under the action of eccentric load cannot be obtained according to a square foundation slab punching calculation method, when the wind turbine generator foundation is designed, the problem of limitation in bearing capacity calculation when the foundation slabs are punched is the problem facing the actual engineering at present.
Disclosure of Invention
In order to solve the problems, the invention provides a method and a system for determining the punching bearing capacity of a wind turbine foundation, which are used for determining the punching bearing capacity of a round foundation slab under the action of large eccentric load, are suitable for calculating the punching bearing capacity of a round fan foundation of an excavation backfill foundation, and solve the problem that the limitation of calculating the punching bearing capacity of a square foundation slab only in the conventional fan turbine foundation design process.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
in a first aspect, the present invention provides a method for determining a die-cut bearing capacity of a wind turbine foundation, including:
acquiring size data of a wind turbine foundation;
obtaining foundation net counter force according to the size data and the maximum down force design value of the round foundation slab in the wind turbine foundation;
and obtaining the punching bearing capacity according to the size data and the design value of the tensile strength of the basic concrete.
In an alternative embodiment, the dimensional data of the wind turbine foundation includes a foundation ring diameter, a circular foundation bedplate diameter, and a circular foundation bedplate effective height.
As an alternative embodiment, the foundation net reaction force is obtained according to the foundation ring diameter, the circular foundation bedplate diameter, the effective height of the circular foundation bedplate and the design value of the maximum downward pressure of the circular foundation bedplate, namely:
wherein the method comprises the steps ofP is the maximum downward pressure design value of the round foundation slab; d is the diameter of the circular foundation slab;the effective height of the round foundation slab; />Is the base ring diameter; a is foundation net counterforce.
As an alternative embodiment, the die-cut bearing capacity is obtained according to the diameter of the foundation ring, the effective height of the circular foundation bedplate and the design value of the tensile strength of the foundation concrete, namely:
wherein,is the section height influence coefficient during punching; />Designing a value for the tensile strength of the basic concrete; b is die-cut bearing capacity; />The effective height of the round foundation slab; />Is the base ring diameter.
As an alternative embodiment, the die-cut bearing capacity is verified according to the foundation net counter force, and the verification process is that the die-cut bearing capacity is greater than or equal to the foundation net counter force.
As an alternative implementation mode, the wind turbine generator system foundation comprises a circular foundation slab and a foundation ring arranged at the center of the circular foundation slab, and the section of the foundation ring is circular.
Alternatively, the centers of the cross sections of the circular foundation slab and the foundation ring are located on the same vertical line.
In a second aspect, the present invention provides a die-cut bearing capacity determining system for a wind turbine foundation, including:
the data acquisition module is configured to acquire size data of a wind turbine generator foundation;
the foundation net counterforce determination module is configured to obtain foundation net counterforce according to the size data and the maximum downward pressure design value of the round foundation slab in the wind turbine generator foundation;
and the die-cut bearing capacity determining module is configured to obtain the die-cut bearing capacity through the size data and the basic concrete tensile strength design value.
In a third aspect, the invention provides an electronic device comprising a memory and a processor and computer instructions stored on the memory and running on the processor, which when executed by the processor, perform the method of the first aspect.
In a fourth aspect, the present invention provides a computer readable storage medium storing computer instructions which, when executed by a processor, perform the method of the first aspect.
Compared with the prior art, the invention has the beneficial effects that:
based on the problem that the conventional fan unit foundation design process only has limitation of calculating the punching bearing capacity of the square foundation slab, the invention provides a method for calculating the punching bearing capacity of a wind turbine unit foundation, in particular to a method for determining the punching bearing capacity of a round foundation slab when the round foundation is eccentrically pressed, and the method is suitable for calculating the punching bearing capacity of a round fan foundation of an excavation backfill foundation.
The method and the system for determining the punching bearing capacity of the wind turbine foundation make up for the verification and calculation of the punching bearing capacity of the round foundation slab under the action of large eccentric load in the field, and provide support for the application of the foundation type in practice.
The method and the system for determining the punching bearing capacity of the wind turbine generator foundation, provided by the invention, also relate to checking the punching bearing capacity of the circular foundation slab, checking the punching bearing capacity through the foundation net counter force according to force balance, wherein the punching bearing capacity is required to be greater than or equal to the foundation net counter force, providing a safe and reliable scheme for punching calculation of the circular foundation slab of the wind turbine generator, and ensuring the operation safety of the wind turbine foundation.
Additional aspects of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention.
FIG. 1 is a basic schematic diagram of a wind turbine generator provided in embodiment 1 of the present invention;
the device comprises a top structure, a foundation ring, a circular foundation mat and a base plate, wherein the top structure is 1, the foundation ring is 2, and the circular foundation mat is 3.
The specific embodiment is as follows:
the invention is further described below with reference to the drawings and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular forms also are intended to include the plural forms, and furthermore, it is to be understood that the terms "comprises" and "comprising" and any variations thereof are intended to cover non-exclusive inclusions, such as, for example, processes, methods, systems, products or devices that comprise a series of steps or units, are not necessarily limited to those steps or units that are expressly listed, but may include other steps or units that are not expressly listed or inherent to such processes, methods, products or devices.
Embodiments of the invention and features of the embodiments may be combined with each other without conflict.
Example 1
As shown in fig. 1, the wind turbine foundation provided in this embodiment is constructed based on a circular foundation slab, and specifically includes: a top structure 1, a foundation ring 2 and a circular foundation bedplate 3; the top structure 1 is connected with the foundation ring 2, the foundation ring 2 is positioned at the center of the circular foundation slab 3, the cross sections of the top structure 1, the foundation ring 2 and the circular foundation slab 3 are all circular, and the center of the cross sections of the top structure 1, the foundation ring 2 and the circular foundation slab 3, namely the center of the cross sections, are positioned on the same vertical line.
Preferably, the perpendicular is obtained by connecting the center of the circle of the circular foundation slab 3 with the center of the cross section of the foundation ring 2.
Preferably, the round foundation slab 3 is formed by casting reinforced concrete.
Preferably, the circular foundation slab 3 is entirely buried under the ground.
Preferably, the top structure 1 may be a wind turbine.
Preferably, the load transferred from the superstructure 1 to the circular foundation bedplate 3 is divided into down force, horizontal force and bending moment.
Preferably, the wind turbine foundation type provided in the embodiment is a stand-alone foundation.
In this embodiment, a method for determining a die-cut bearing capacity of a wind turbine generator system is provided, which specifically includes the following steps:
s1: acquiring size data of a wind turbine foundation;
s2: obtaining foundation net counter force according to the size data and the maximum down force design value of the round foundation slab in the wind turbine foundation;
s3: and obtaining the punching bearing capacity according to the size data and the design value of the tensile strength of the basic concrete.
In the step S1, the dimensional data of the wind turbine foundation includes a foundation ring diameterDiameter D of circular base plate and effective height of circular base plate +.>。
In the step S2, according to the diameter of the basic ringDiameter D of circular foundation bed and effective height of circular foundation bedObtaining a foundation net counterforce A by a maximum downward pressure design value P of the circular foundation slab;
preferably, the foundation net reaction force a is calculated as follows:
wherein P is the maximum downward pressure design value of the round foundation mat, and the unit is kN; d is the diameter of the circular foundation slab and is in unit of m;the effective height of the round foundation slab is in m; />The unit of m is the base ring diameter.
In the step S3, according to the diameter of the basic ringEffective height of circular foundation slab +.>Obtaining a punching bearing capacity B by a basic concrete tensile strength design value;
preferably, the die-cut bearing capacity B is calculated as follows:
wherein,is the section height influence coefficient during punching; />Designed value for the tensile strength of basic concrete, the unit is kN/m 3 ；
In the embodiment, determining the punching bearing capacity according to the comparison of the foundation net counter force and the punching bearing capacity, and verifying the punching bearing capacity according to the balance of the forces; namely:。
the embodiment provides a method for determining the punching bearing capacity of a wind turbine generator foundation and a method for checking the punching bearing capacity, wherein the damage stress model of the wind turbine generator foundation considered by the method is high in similarity with the actual damage state, and the result calculated by the method accords with the actual damage state result, so that a theoretical system for calculating the bearing capacity of the wind turbine generator foundation is perfected, a safe and reliable scheme is provided for punching calculation of the circular foundation of the wind turbine generator, and operation safety of the wind turbine foundation is ensured.
Example 2
The embodiment provides a die-cut bearing capacity determination system of wind turbine foundation, includes:
the data acquisition module is configured to acquire size data of a wind turbine generator foundation;
the foundation net counterforce determination module is configured to obtain foundation net counterforce according to the size data and the maximum downward pressure design value of the round foundation slab in the wind turbine generator foundation;
and the die-cut bearing capacity determining module is configured to obtain the die-cut bearing capacity according to the size data and the basic concrete tensile strength design value.
It should be noted that the above modules correspond to the steps described in embodiment 1, and the above modules are the same as examples and application scenarios implemented by the corresponding steps, but are not limited to those disclosed in embodiment 1. It should be noted that the modules described above may be implemented as part of a system in a computer system, such as a set of computer-executable instructions.
In further embodiments, there is also provided:
an electronic device comprising a memory and a processor and computer instructions stored on the memory and running on the processor, which when executed by the processor, perform the method described in embodiment 1. For brevity, the description is omitted here.
It should be understood that in this embodiment, the processor may be a central processing unit CPU, and the processor may also be other general purpose processors, digital signal processors DSP, application specific integrated circuits ASIC, off-the-shelf programmable gate array FPGA or other programmable logic device, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory may include read only memory and random access memory and provide instructions and data to the processor, and a portion of the memory may also include non-volatile random access memory. For example, the memory may also store information of the device type.
A computer readable storage medium storing computer instructions which, when executed by a processor, perform the method described in embodiment 1.
The method in embodiment 1 may be directly embodied as a hardware processor executing or executed with a combination of hardware and software modules in the processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method. To avoid repetition, a detailed description is not provided herein.
Those of ordinary skill in the art will appreciate that the elements of the various examples described in connection with the present embodiments, i.e., the algorithm steps, can be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
While the foregoing description of the embodiments of the present invention has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the invention, but rather, it is intended to cover all modifications or variations within the scope of the invention as defined by the claims of the present invention.
Claims (7)
1. The method for determining the punching bearing capacity of the wind turbine foundation is characterized by comprising the following steps of:
acquiring size data of a wind turbine foundation;
obtaining foundation net counter force according to the size data and the maximum down force design value of the round foundation slab in the wind turbine foundation; the dimensional data of the wind turbine generator foundation comprises a foundation ring diameter, a circular foundation slab diameter and an effective height of the circular foundation slab; according to the diameter of the foundation ring, the diameter of the circular foundation bedplate, the effective height of the circular foundation bedplate and the design value of the maximum downward pressure of the circular foundation bedplate, the foundation net counterforce is obtained, namely:
A＝0.25Pπ[D 2 -(d+2h 0 ) 2 ]
wherein P is the design value of the maximum downward pressure of the round foundation mat; d is the diameter of the circular foundation slab; h is a 0 The effective height of the round foundation slab; d is the base ring diameter; a is foundation net counterforce
Obtaining punching bearing capacity according to the size data and the design value of the tensile strength of the basic concrete, namely:
B＝0.7β hp πh 0 (d+h 0 )f t
wherein beta is hp Is the section height influence coefficient during punching; f (f) t Designing a value for the tensile strength of the basic concrete; b is die-cut bearing capacity; h is a 0 The effective height of the round foundation slab; d is the base ring diameter.
2. The method for determining the die-cut bearing capacity of the wind turbine foundation according to claim 1, wherein the die-cut bearing capacity is verified according to the foundation net counter force, and the verification process is that the die-cut bearing capacity is greater than or equal to the foundation net counter force.
3. The method for determining the punching bearing capacity of the wind turbine generator system foundation according to claim 1, wherein the wind turbine generator system foundation comprises a circular foundation slab and a foundation ring arranged at the center of the circular foundation slab, and the section of the foundation ring is circular.
4. A method for determining die-cut bearing capacity of a wind turbine foundation according to claim 3, wherein the centers of the cross sections of the circular foundation slab and the foundation ring are located on the same vertical line.
5. A die-cut bearing capacity determining system of a wind turbine foundation, adopting a die-cut bearing capacity determining method of a wind turbine foundation according to claim 1, comprising:
the data acquisition module is configured to acquire size data of a wind turbine generator foundation;
the foundation net counterforce determination module is configured to obtain foundation net counterforce according to the size data and the maximum downward pressure design value of the round foundation slab in the wind turbine generator foundation;
and the die-cut bearing capacity determining module is configured to obtain the die-cut bearing capacity according to the size data and the basic concrete tensile strength design value.
6. An electronic device comprising a memory and a processor and computer instructions stored on the memory and running on the processor, which when executed by the processor, perform the method of any one of claims 1-4.
7. A computer readable storage medium storing computer instructions which, when executed by a processor, perform the method of any of claims 1-4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110874229.8A CN113792408B (en) | 2021-07-30 | 2021-07-30 | Method and system for determining punching bearing capacity of wind turbine foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110874229.8A CN113792408B (en) | 2021-07-30 | 2021-07-30 | Method and system for determining punching bearing capacity of wind turbine foundation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113792408A CN113792408A (en) | 2021-12-14 |
| CN113792408B true CN113792408B (en) | 2024-03-19 |
Family
ID=78877097
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110874229.8A Active CN113792408B (en) | 2021-07-30 | 2021-07-30 | Method and system for determining punching bearing capacity of wind turbine foundation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113792408B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106193090A (en) * | 2016-07-22 | 2016-12-07 | 国家电网公司 | A kind of method improving concrete spread foundation cutting-bearing capacity |
| CN107034909A (en) * | 2017-04-11 | 2017-08-11 | 浙江大学 | A kind of simplified calculation method of foundation ring node anti-bending bearing capacity |
| CN109543287A (en) * | 2018-11-20 | 2019-03-29 | 深能南京能源控股有限公司 | Wind turbines key dimension optimization method based on genetic algorithm |
| CN110528557A (en) * | 2019-08-27 | 2019-12-03 | 西安理工大学 | Transmission line of electricity combines the design method of the upper plate of plate stem list anchor slab foundation structure |
| CN111259500A (en) * | 2020-01-14 | 2020-06-09 | 浙江大学城市学院 | Simplified calculation method for punching bearing capacity of FRP (fiber reinforced Plastic) reinforced concrete plate without shear ribs |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020149571A1 (en) * | 2001-04-13 | 2002-10-17 | Roberts Jerry B. | Method and apparatus for force-based touch input |
-
2021
- 2021-07-30 CN CN202110874229.8A patent/CN113792408B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106193090A (en) * | 2016-07-22 | 2016-12-07 | 国家电网公司 | A kind of method improving concrete spread foundation cutting-bearing capacity |
| CN107034909A (en) * | 2017-04-11 | 2017-08-11 | 浙江大学 | A kind of simplified calculation method of foundation ring node anti-bending bearing capacity |
| CN109543287A (en) * | 2018-11-20 | 2019-03-29 | 深能南京能源控股有限公司 | Wind turbines key dimension optimization method based on genetic algorithm |
| CN110528557A (en) * | 2019-08-27 | 2019-12-03 | 西安理工大学 | Transmission line of electricity combines the design method of the upper plate of plate stem list anchor slab foundation structure |
| CN111259500A (en) * | 2020-01-14 | 2020-06-09 | 浙江大学城市学院 | Simplified calculation method for punching bearing capacity of FRP (fiber reinforced Plastic) reinforced concrete plate without shear ribs |
Non-Patent Citations (3)
| Title |
|---|
| 周洪博 ; 杨永新 ; 张丽英 ; 杨娜梅 ; .风力发电机组基础设计分析.内蒙古科技大学学报.2009,(第04期),正文第358-363页. * |
| 郑刚.高等基础工程学.2007,正文第368-370页. * |
| 风力发电机组基础设计分析;周洪博;杨永新;张丽英;杨娜梅;;内蒙古科技大学学报(第04期);正文第358-363页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113792408A (en) | 2021-12-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5743914B2 (en) | Steam turbine bearing support structure and steam turbine | |
| CN113792408B (en) | Method and system for determining punching bearing capacity of wind turbine foundation | |
| CN108229056B (en) | Anti-seismic reliability design method for anti-seismic support and hanger of building | |
| JP5967862B2 (en) | Steel pipe pile pier | |
| Stavridou et al. | Verification of anchoring in foundations of wind turbine towers | |
| CN102721519A (en) | Two-step diagnosis method for instability-caused damage position of tower-body main bar of tower-type bar system steel structure | |
| CN103469732B (en) | Construction method of preformed holes for foundation bolts of bridge support | |
| CN109281408B (en) | Comprehensive pipe gallery embedded part and fixing method thereof | |
| US20200200148A1 (en) | Method for Assembling a Wind Turbine and Wind Turbine Assembled According to Said Method | |
| CN112818435B (en) | Method and system for determining tensioning sequence of prestressed steel bundles of containment vessel of nuclear power plant | |
| CN112084635B (en) | Method and system for overturning stability verification of transmission pole foundation | |
| CN213803428U (en) | Sludge treatment all-in-one machine equipment foundation | |
| CN210714936U (en) | Auxiliary supporting device for blade | |
| CN108166540B (en) | Foundation checking method and device | |
| CN219527975U (en) | Horizontal foundation bolt for mounting automobile ramp | |
| CN217232407U (en) | BIM-based steel concrete combined anti-seismic split column with prefabricated core | |
| CN204343697U (en) | A kind of safety shaft isolation platform | |
| CN117313465B (en) | Damper system suitable for large megawatt offshore wind turbine and optimization method thereof | |
| CN219491058U (en) | Steam turbine generator base foundation | |
| CN105887919A (en) | Mounting and constructing method of rotary hub equipment and high-tonnage foundation mass block | |
| CN209802846U (en) | Device for preventing end part of building structure test column member from being damaged | |
| CN220132933U (en) | Deep foundation pit retaining wall pile inclined support | |
| CN113420352A (en) | Method, device and system for determining arrangement of high-pressure jet grouting piles in breakwater | |
| JP6596268B2 (en) | Equipment installation stand, manufacturing method thereof, and plant | |
| CN108018888B (en) | Device and method for measuring contact state between inner wall of steel pipe pile and core filling concrete of offshore wind farm |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |